---
title: EgoMemReason Leaderboard
emoji: 🧠
colorFrom: indigo
colorTo: purple
sdk: gradio
sdk_version: 5.15.0
python_version: "3.12"
app_file: app.py
pinned: false
license: cc-by-nc-4.0
hf_oauth: true
---

# EgoMemReason — Leaderboard Space

Live leaderboard for the **EgoMemReason** benchmark: 500 multiple-choice questions over week-long egocentric video, evaluating entity / event / behavior memory.

- 🌐 Project page: <https://egomemreason.github.io/>
- 📄 Paper: <https://arxiv.org/abs/2605.09874>
- 💻 Reference eval scripts: <https://github.com/Ziyang412/EgoMemReason>
- 📦 Public questions: <https://huggingface.co/datasets/Ted412/EgoMemReason>
- 🎬 Source frames: <https://egolife-ai.github.io/>

## Operator notes

This Space lives at `Ted412/EgoMemReason` and writes one JSON record per submission to the public dataset `Ted412/EgoMemReason-Leaderboard`. The held-out answer key lives in a separate **private** dataset `Ted412/EgoMemReason-Private` and is pulled at boot via `snapshot_download(token=HF_TOKEN)`.

### Required Space secret

| Name | Value | Scope |
|---|---|---|
| `HF_TOKEN` | Fine-grained HF token | Write on `Ted412/EgoMemReason-Leaderboard` + Read on `Ted412/EgoMemReason-Private` |

Create at <https://huggingface.co/settings/tokens> → fine-grained → grant only those two repos.

### Local development

```bash
python -m venv .venv && source .venv/bin/activate
pip install -r requirements.txt

# Copy the private answer key into cwd (skips the snapshot_download path).
cp ../EgoMemReason-EvalAI.archived/annotations/annotations_private.json .

# Run, optionally faking a user.
DEBUG_USER=alice python app.py
# → http://127.0.0.1:7860
```

Tests:

```bash
python -m pytest tests/ -q
```

### Architecture

```
EgoMemReason-Space (this Space, public)
├── app.py            Gradio UI (Leaderboard / Submit / Manage / About)
├── evaluator.py      pure scoring — port of the old EvalAI main.py
├── ledger.py         HF I/O: pulls private annotations at boot; writes
│                     one JSON record per submission to the public dataset
├── auth.py           resolves the HF username from gr.OAuthProfile
└── annotations_private.json   pulled at boot from the private dataset

Ted412/EgoMemReason-Private (HF dataset, private)
└── annotations_private.json   500 Qs WITH correct_answer

Ted412/EgoMemReason-Leaderboard (HF dataset, public)
└── submissions/
    └── <uuid>.json   one immutable record per submission
                      (only is_selected flips on a re-write)
```